<template>
  <div class="goods">
    <div class="wrap">
      <Crumb> </Crumb>
      <img src="../assets/img/banner.4c6b6225.png" width="100%" alt="" />
      <ul class="options">
        <li>
          <strong>排序：</strong>
          <span
            :class="{ active: num1 == index }"
            v-for="(item, index) in options1"
            :key="index"
            @click="numTab(index, item.min, item.max)"
            >{{ item.txt }}</span
          >
        </li>
        <li>
          <strong>分类：</strong>
          <span
            :class="{ active: num2 == item.type }"
            v-for="item in options2"
            :key="item.type"
            @click="giftTab(item.type)"
            >{{ item.txt }}</span
          >
        </li>
      </ul>
      <Item :data="goodsArrShow" />
      <p style="text-align: center; margin-top: 20px">
        <span class="animation"
          ><i :class="isShowTxt ? 'iconfont icon-loading' : ''"></i
        ></span>
        {{ isShowTxt ? "正在加载... ..." : "已经到底了" }}
      </p>
    </div>
  </div>
</template>                            
<script>
import Crumb from "../components/Crumb.vue";
import Item from "@/components/index/Item";
import { goodsSearch } from "@/request/api";
import { getScrollTop, getClientHeight, getScrollHeight } from "@/utils";
export default {
  data() {
    return {
      did: 0,
      type: 0,
      min: 0,
      max: 0,
      keyword: "",
      // 排序的数组项
      options1: [
        { min: 0, max: 10000, txt: "全部" },
        // "我还可以兑换"的max值是Header组件的coin值
        { min: 0, max: 0, txt: "我还可以兑换" },
        { min: 0, max: 500, txt: "0-500分" },
        { min: 500, max: 1000, txt: "500-1000分" },
        { min: 1000, max: 1500, txt: "1000-1500分" },
        { min: 1500, max: 2500, txt: "1500-2500分" },
        { min: 2500, max: 6500, txt: "2500-6500分" },
        { min: 6500, max: 10000, txt: "6500-10000分" },
      ],
      // 分类数组项
      options2: [
        { type: 0, txt: "全部" },
        { type: 1, txt: "实体商品" },
        { type: 2, txt: "虚拟商品" },
      ],
      // 排序当前项
      num1: 0,
      // 分类当前项
      num2: 0,
      goodsArr: [],
      goodsArrShow: [],
      page: 1,
      isShowTxt: false,
    };
  },
  components: {
    Crumb,
    Item,
  },
  created() {
    this.keyword = this.$route.query.keyword;
    this.getCart();
  },
  mounted() {
    window.addEventListener("scroll", this.scrollFn);
  },
  beforeDestroy() {
    window.removeEventListener("scroll", this.scrollFn);
  },
  methods: {
    async getCart() {
      let res = await goodsSearch({
        did: this.did,
        type: this.type,
        min: this.min,
        max: this.max,
        keyword: this.keyword,
      });
      console.log(res);
      this.goodsArr = res.data;
      this.goodsArrShow = this.goodsArr.filter((item, index) => index < 8);
      this.page = 1;
    },
    numTab(index, min, max) {
      this.num1 = index;
      this.min = min;
      this.max = max;
      this.getCart();
    },
    giftTab(type) {
      this.num2 = type;
      this.type = type;
      this.getCart();
    },
    scrollFn() {
      if (this.goodsArr.length / 8 < this.page) {
        this.isShowTxt = false;
        return;
      }
      this.isShowTxt = true;
      if (getScrollTop() + getClientHeight() > getScrollHeight() - 20) {
        this.page++;
        this.goodsArrShow = this.goodsArr.filter(
          (item, index) => index < 8 * this.page
        );
      }
    },
  },
  watch: {
    "$route.query.keyword": {
      handler(n, o) {
        this.op = 0;
        this.keyword = n;
        this.getCart();
      },
    },
  },
};
</script>
 
<style lang = "less" scoped>
@import "../assets/css/public.less";

.goods {
  padding-bottom: 50px;
  background: #efefef;
  padding-top: 20px;
  .options {
    padding-top: 20px;
    padding-bottom: 40px;
    li {
      margin-top: 20px;
      strong {
        color: #000;
        font-weight: bold;
      }
      span {
        margin-right: 20px;
        margin-left: 10px;
        cursor: pointer;
        color: #999;
        &.active {
          color: @base-color;
          font-weight: bold;
        }
      }
    }
  }
}
.animation {
  display: inline-block;
  animation: dong 1s infinite linear;
}
@keyframes dong {
  0% {
    transform: rotate(0);
  }
  50% {
    transform: rotate(180deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
</style>